This happens before the user selection login screen is loaded. My laptop is a hpg6 it normally give a white screen so I connected it to a external monitor.then one day the laptop screen is black and capslock light will flash when turn on and off. Sometimes I have to power it on and off 20 times before the monitor will work properly, and some days, my monitor won't turn on at all! On a Windows computer, when using Microsoft Office programs (such as Outlook, Word, Excel, PowerPoint, etc.) ... You can move the cursor and everything and see the cursor loading thing being interrupted each time the screen goes black (so the screen â¦ Adobe Flash black screen is one of the most common problems that users often come across. Laptop screen flickered a lot then went black: My hp laptop screen is flickering n keyboard also not working: Brightness flickering - AC plugged in - Lenovo G50-30, Celeron N2830: laptop screen flickers, but works well with hdmi cable connected to T.V: Laptop LCD screen flickering (gets better if ext. But I â¦ computer makes disconnect sound, screen flashes black I just set up a new computer yesterday and it worked fine all afternoon/evening. Windows 10 Pro 64bit New 16 Apr 2016 #1. Hello all, I'm looking for help and all I can offer in return is gratitude - or a 3D print if you'd like! It all went fine however this annoying problem, when I turn on the computer, the screen is blank for 1 minute.. Hello I have an Acer Travelmate and Windows 7 and have used it for years without. Infopackets Reader 'Tina' writes: " Dear Dennis, My monitor keeps going black. Procedure Apply â¦ When this happens, my â¦ However, a problem that crops up a couple of times is that, while I am working, the screen will flicker and go dark. It flashes on and then off after a few seconds, then it goes to a black / blank screen. 6. Hence you need to update or reinstall your Adobe Flash â¦ If you are using an old or outdated version of Adobe Flash, then there can be a chance of getting this problem. Jump to solution ... then later the screen starts flashing black like mad! Actually, it's more of a light-ish dark. However, when I plug the computer into an external monitor or TV (via HDMI), the screen comes â¦ monitor â¦ This morning, the computer keeps making the USB disconnect sound and then the screen flashes black for a second. Screen flashes black before the login screen is supposed to load. RunOnce is a feature that allows you to specify commands that Windows 10 can run one time and then deletes, but it can also cause the screen to go black on a computer. When using programs other than Office apps, the symptoms do not appear. I have tried both an hdmi and dvi-d cable, i have tried with two different graphics cards (gtx 650 + gtx 750ti) and with one of the cards the screen goes black, with the other card my monitor starts blinking. Reply James Intermittent black screen flashes and slower computer by a50 ... goes to the black screen, then back to the page I was trying to type in. Posts : 19. But in recent times, some issues arise with Adobe Flash player. The problem is while i'm playing games for like 2 minutes in full screen on high options (graphics that my graphics card can run) than my screen goes all black and starts flashing but i can still hear my friends on discord talk and they can hear me talk.The only thing i can do is restarting my pc. some of the selected Office application windows do not display correctly, are unreadable, or the entire monitor goes black. Screen flashes black and then goes back to normal (dwm.exe) Handler.